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Finding the Fourth Proportional to 67,891.20, 101,795.89 and 30,444.50

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Solution

The fourth proportional to 67,891.20, 101,795.89 and 30,444.50 is: 45,648.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,891.20 : 101,795.89 = 30,444.50 : x
  2. Step 2: Convert to fraction form
    67,891.20/101,795.89 = 30,444.50/x
  3. Step 3: Cross multiply
    67,891.20x = 101,795.89 × 30,444.50
  4. Step 4: Simplify right side
    67,891.20x = 3,099,124,973.11
  5. Step 5: Solve for x
    x = 3,099,124,973.11/67,891.20
  6. Step 6: Final answer
    x = 45,648.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.